Clamping member for loose-leaf binders



June 11, 1929. H, G, BUCHAN 1,716,515

CLAMPING MEMBER FOR LOOSE LEAF BINDERS Filed May 1o, 1926 2 sheets-sheet 1 'l 'l' llllllllllll June 11, 1929. H. G. BUCHAN CLAMPING MEMBER FOR LOOSE LEAF BINDERS.

Filed May 1o, 192e 2 Sheets-Sheet 2 Buchan Patented .lune ll,

naires stares lll rarest ovaries.

HUGH G. BUCHAN, OF ST. LOUIS, IDLEISSURI,ASSIGNOR TO BUClt-MiNV TELEPHONE REC- CRDS COMPANY, OF ST. LO'IS, MISSQURI, A CORPORATION 0F DELAVARE.

cLAMrIive MEMBER ron Lenen-LEAF niimnns.

Application filed May 10 `This invention relates to clamping mem,- bers for loose leaf binders.

It is among the objects of this invention to produce an economical clamping member from sheet metal which eliminates the usual integral hinge eyelets providing a structure which can be completely sheathed and encompassed by hinge members which serve to hold the ends of the clamping member in juxtaposition.

The invention comprises the novel structure and combinations hereinafter described and more particularly pointed out and defined in the appended claims.

In the accompanying drawings which illustrate certain preferred embodiments of this invention and in which similar reference numerals refer to similar features in the different views:

Figure 1 is a top plan View of a binder embodying this invention.

F igur-e 2 is an enlarged plan view of the clamping member with fragments of the cover attached thereto.

Figure 3 is an enlarged sectional view upon the line 3 3 of Figure 2,

Figure et is a longitudinal sectional view through the clamping member.

Figure 5 is a sectional view upon the line 5-5 of vFigure 4. Y

Figure 6 is a'plan view of a slightly modi lied form of the invention.

Figure 7 is a top plan view of the modified form of clamp showing fragments of the cover.

Figure 8 is an end elevational view of the clamping member.

Figure 9 is a longitudinal sectional view through the clamping member.

Figure l0 is an enlarged sectional View upon the line lO-lO of Figure 9.

Figure ll is a sectional view through a further modified clamping member.

In referring to the drawings in Figures l to l() it will be observed that each clamping member consists of a tube of sheet meta-l l which may be elliptical or oblong in cross section. It is made by rolling or forming a rec` tangular sheet of metal into proper cross sectional form and bringing the edges of such sheet into juxtaposition for forming the inner edge of the clamping member. A pair of straw board sleeves 2 or the like telescope over each tube. These sleeves are suitably 192s. serial nadamas?.

spaced apart at their adjacent ends for receiving a central'strap'or loop of metal 3 and their outer ends are spaced inwardly of the ends ofthe metal tubes to allow space for end loops 3 or 3a. A fabric sheath et completely cncloses'each tubular clamping member and extends over the straw board sleevesQ. The metal loops 3 vextend'bey'ond the inner edge of each clamping member to receive apertured bearingblocks 5 which embrace the inner sideof each clamping member and which are preferably convex upon their inner portions. The loops 3a which are end loops and differ from the loops Sin that theyhave a wall 3b upon their outer side to close the ends of the clamping member, likewise extend beyond the inner edge of the clamping member for receiving apertured bearing blocks 5a which embrace the inner edge of the clamp-l ing member. vThe straps or loops 3 and 3a in combination with the bearing blocks compress the fabric shea-th 4 tightly around the metal sheath and against the ends of the straw board sleeves 2.

In Figures l to 5, the illustrated structure comprises end plugs 6 which act as closures for the ends of the clamping member. These end plugs have inwardly extending apertui'ed projections 6a, t-he apertures of which are in alinement with the apertures in the blocks 5. The apertures of the blocks 5a and 5 shown in Figure 9, arevalso in alinement. A cover 8 is adapted to be attached to each clamping member by a suitable hinge rod extending through the apertures of the bear-v ing blocks. The end caps 3 and plugs @may be retained in position by suitable screws 9 extending' tl'ierethrough and also through the metal tube 1. The end members 3a may be held in position in a similar wayor by stamping tangs l0 therefrom into the fabric sheath.

In Figure ll, I have shown a modified form of clamping member. Instead of using a hollow tubular member, a flat rectangular solid clamping member l1 may be used and rectangular loops of metal l2 may surround the same and extend beyond the inner edge thereof for receiving an apertured bearing block 13' that forms the hinge connection for the cover.

I am aware that many changes may be made, and numerous details of construction may be varied through a wide range without departing from the principles of this invenn tion, and I therefore do not purpose limiting the patent granted hereon, otherwise than necessitated by the prior art. f `I claim as my invention: l

1. A clamping member for a loose leaf binder having metal loops surrounding the same and extending therebeyond at one edge and apertured hinge blocks positioned betweenv the extended ends of said loops and said clamping member'.

2. In a clamping member for loose leaf binders, a tubular member, a covering therearound, and straps embracing said member and sunk into said covering for Yholding the sametherearound.

3. In a clamping member for loose leaf binders, a tubular member, spaced sleeves on said member, straps around said member between said sleeves and adjacent the outer ends binders, a flattened hollovs7 metallic clamping member, a metallic loop surrounding an inter mediate portion of said member0 metallic loops surrounding the end portions of said member and provided With means for closing said ends, and apertured bearing blocks positioned Within said loops adjacent one edge of said clamping member for hinging a cover member for the binder thereto.

6. In a clamping member for loose leaf binders, a flattened tubular member, spaced sleeves on said member, a covering for said sleeves and member, spaced metal loops surrounding said member and clamping the oovering thereon, and apertured bearing blocks positioned Within said loops adjacent one edge of said clamping member.

7. In a clamping member for loose leaf binders, a iiattened hollow member, sleeves thereon, a covering inclosing said sleeves and member, metal loops surrounding said covering, said loops extending beyond one edge of said member, apertured bearing blocks confined in the extended portions of said loops, said blocks being adapted for hingedly supporting a cover member of the binder.

In testimony Whereof'I have hereunto subscribed my name.

HUGH e. BUCHAN. 

